Longitudinal sealing device for an optical cable core

Details Longitudinal sealing device for an optical cable core Longitudinal sealing device for an optical cable core

1990-12-12

1991-09-10

Ullah, Akm

Optical waveguides

With optical coupler

Particular coupling structure

385113, 385109, 385 53, G02B 644

Patent

active

050468146

ABSTRACT:
This device is interposed between two lengths of an optical fiber lead-in cable comprising a core constitution by a small diameter stainless steel tube containing a bundle of optical fibers comprises: a metal plug which is brazed to the end of one length of tube and which includes a barrel including a cavity whose diameter is not less than the diameter of the bundle of fibers and whose outside surface has a diameter which is greater than the diameter of the tube, said outside surface being provided with transverse grooves; a block of epoxy resin molded both over a portion of a bundle of fibers and over the barrel; the resin covering portions of the bundle both inside and outside the barrel; a sleeve fixed in sealed manner to the other length of tube; a clamping ring; a viscous hydrophobic liquid injected into the space remaining empty between the sleeve and the block of epoxy resin; and epoxy resin injected into the cavities inside the sleeve.

REFERENCES:
patent: 4707065 (1987-11-01), Jenkins
patent: 4729624 (1988-03-01), Kakii et al.

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